247339354289 has 2 divisors, whose sum is σ = 247339354290. Its totient is φ = 247339354288.

The previous prime is 247339354271. The next prime is 247339354303. The reversal of 247339354289 is 982453933742.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209379456400 + 37959897889 = 457580^2 + 194833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247339354289 is a prime.

It is a super-2 number, since 2×247339354289² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247339354219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123669677144 + 123669677145.

It is an arithmetic number, because the mean of its divisors is an integer number (123669677145).

Almost surely, 2^247339354289 is an apocalyptic number.

It is an amenable number.

247339354289 is a deficient number, since it is larger than the sum of its proper divisors (1).

247339354289 is an equidigital number, since it uses as much as digits as its factorization.

247339354289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 59.

The spelling of 247339354289 in words is "two hundred forty-seven billion, three hundred thirty-nine million, three hundred fifty-four thousand, two hundred eighty-nine".